Abstract
A relativistic electron motion is able to be integrated analytically in the field of linearly polarized single-frequency laser. The motion is an oscillation in the polarization direction (y) with the laser frequency ω and in the laser propagation (x) direction with 2ω frequency. The maximum energy of the oscillation depends on the initial momentum in the x-direction. This property of the solution contributes to the production of high-energy electrons. When additional field is applied to the system, it is shown that the orbit becomes stochastic. The stochasticity is very important to transfer the laser energy to the electron energy. The stochastic heating is modeled with diffusion equation for small perturbation and Lyapunov exponent is used to identify whether the motion is chaotic. Dependence of hot electron temperature is discussed by varying the laser intensity and pulse duration.
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Takabe, H. (2020). Chaos due to Relativistic Effect. In: The Physics of Laser Plasmas and Applications - Volume 1. Springer Series in Plasma Science and Technology. Springer, Cham. https://doi.org/10.1007/978-3-030-49613-5_8
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DOI: https://doi.org/10.1007/978-3-030-49613-5_8
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